TL1453C

DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUIT

SLVS039A – FEBRUARY 1990 – REVISED DECEMBER 1990

4

POST OFFICE BOX 655303

f = 200 kHz (unless otherwise noted) (continued)

pwm comparator section

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

Input threshold voltage atf=10kHz (pins 5 and 12)

Zero duty cycle

2.05

2.25

V

Input threshold voltage at f = 10 kHz (pins 5 and 12)

Maximum duty cycle

1.2

1.45

V

Input (sink) current (pins 5 and 12)

VI = 1.25 V

0.5

1.6

mA

Input (source) current (pins 5 and 12)

VI = 1.25 V

–45

–70

µA

total device

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

Standby supply current

Off-state

1.3

1.8

mA

Average supply current

RT = 10 kΩ

1.7

2.4

mA

† All typical values are at TA = 25°C.

test circuit

0.1

µF

OUTPUT 1

OUTPUT 2

9

10

11

12

13

14

15

16

2 OUTPUT

CONTROL

2 DEAD-TIME

2 FEEDBACK

IN–2

IN+2

SCP

REF

GND

1 OUTPUT

CONTROL

1 DEAD-TIME

1 FEEDBACK

IN–1

IN+1

8

7

6

5

4

3

2

1

INPUT

TEST

INPUT

TEST

RT

CT

RT

VCC

VCC

RL

RL

TL1453C

CT

330 pF

10 k

Ω